The freezing point of an aqueous solution of barium nitrate is -2.65°C. Determine the apparent molal concentration of barium nitrate.

Q: Researchers wished to mimic the conditions of the medial Golgi (pH = 6.3). Which of the buffers…

A: To make a buffer solution of given pH , the buffer is chosen such that the pH lies in buffer range .…

Q: What is the mass number of an isotope

A: Mass number is equal to sum of mass of atomic number and number of neutron

Q: Calculate the alkaline strength of pearl ash (impure potassium carbonate) in terms of percent K2O…

A:

Q: Calculate [H3O+], [OH-], pH, and pOH for the following solutions. Assuming complete dissociation for…

A: From the given Species , first concentration of H3O+ or OH- is calculated based on their nature.…

Q: What is the oxidation number of the carbon in a pentanoate ion, C5H902 ? +1.0 -2.0 O -1.0 O -1.2 O…

A: In this question we have to tell the oxidation number of carbon in pentanoate.

Q: Un quimico mezcló soluciones de nitrato de hierro (II) y tiocianato de potasio para llevar a cabo la…

A: To calculate equilibrium constant we would use the given Concentrations of all Species at…

Q: Part A FAD FADH, CH3(CH,),CSCOA Acetyl-CoA dehydrogenase Interactive 3D display mode H3C -CH3…

A:

Q: Write the equation for the aldol condensation of 2 moles of 2-butanone

A:

Q: 2. The two molecules A. and B. are in equilibrium in acidic conditions as is shown below. Draw a…

A: When aldehyde and alcohol reacts hemiacetal is formed.

Q: Below is shown the phase diagram for benzene. Note the scale on the pressure axis is not linear.…

A: To check the process , we need to determine the phase of benzene at given Pressure and both…

Q: What is the IUPAC name of the structure?

A: Esters nomenclature:  Esters named as alkyl chain from the alcohol is a substituent , parent…

Q: briefly explain how beta ans gamma radiation can be detected in a medical setting.

A: Beta particles = Beta particles is used to treat health conditions like eye, bone cancer and…

Q: What is the maximum number of grams of Cu2S that can be formed when  20.0 grams of S react with…

A: Mass of S = 20.0 g

Q: The reaction 2A + 2B → M+ N has the rate law: Rate = k[A]?. At 25°C, k = 0.0107 L mol 1 s-1. If the…

A: For the second-order reaction, the sum of the exponents in the rate law is two. The rate of…

Q: Can you please explain why N-acetylamino group, -NHC(O)CH3, has a positive σ − value (0.47) but a…

A:

Q: Br ОН

A:

Q: I have 123.8 grams of KBr, ana combine it, in a beaker, with water at a temperature of 60.0 degrees…

A:

Q: 3 In the following equilibrium: HPO,¯ + HSO, H,PO4 + SO, Identify (encircle) Brønsted-Lowry…

A: Acid is hydrogen ions donar and base is hydrogen ions acceptor

Q: What is the purpose of Chromic acid test? a. What are the reagents used? b. Write oxidation…

A: The Jones reactant is used to oxidise aldehydes and alcohols while reducing chromic acid, producing…

Q: Exposure to arsenic can result to subacute to severe toxicity and can sometimes be lethal and cause…

A: The question is based on the concept of gravimetric analysis. We have to calculate percentage of…

Q: Hydrogen and iodine gas react to produce hydrogen iodide gas. What is the value of Keg for this…

A: Given: H2=0.40 MI2=0.038 MHI=0.55 M

Q: Chemistry 1.A fabric specimen weighs 2.341g when completely dried and 2.495g under standard…

A: Given that, for a fabric specimen  The weight of the completely dry sample is D = 2.341 g. The…

Q: Ethanol, with AHvap = 40.5 kJ mol-1, has a higher AHvap than methanol, which is 35.2 kJ mol1, due to…

A:

Q: Cream of tartar is a white powder sometimes used in baking. (It's what separates a tangy, chewy…

A: Given, Ka=8.73×10-3

Q: O 16.1 O 1.61 O 3.22 O 32.2 O 26.4

A:

Q: Determine the molarity of a solution with a volume of 562. mL and 0.570 mol of solute dissolved.…

A:

Q: Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample,…

A:

Q: For numbers 39 to 40: In a carbon dioxide plant monoethanolamine is used to absorb CO2 from…

A: 39.b

Q: What are considered major sources of phosphates for its high concentrations in natural waters?

A: Here we have to write the major source of Phosphate .

Q: 1 Which of the folowing conversion tactors is corect based on the equation given? 2Nal C2Nac imel a…

A: 1.) From the chemical equation , we can use mole to mole ratio as conversion factor.  Moles to mass…

Q: How many liters of hydrogen gas are needed to react with 108 grams of hydrochloric acid using the…

A:

Q: -/1 E View Policies Current Attempt in Progress A sample of technetium-99m with a mass of 7.61 ng…

A: Concept:    Radioactive decay: It is the process by which an unstable atomic nucleus loses energy by…

Q: Using the grignard reaction of alkanes what is the resulting alkane if the reactant is C4H9Br? a.…

A: Grignard reagent is an organometallic compound. It is formed when an alkyl halide reacts with…

Q: Which of the following will be diamagnetic? O Ni²+ O Co3+ OMN²+ Sc3+

A: Given :-   Ni2+  Co3+  Mn2+  Sc3+  To identify :- diamagnetic ion

Q: An organic chemist reacted 10g CH4 with an excess of Cl2 and obtained 10g CH3CI. a. What should have…

A: Solution -

Q: The heat capacity of ice is 2.108 J/g C. If I take a 9.75 g sample of Moderna vaccine that is kept…

A: Given: The heat capacity of ice = 2.108 J/g∘C We have to find the amount of heat required to heat a…

Q: Provide the IUPAC name for the condensed structural formula shown here. CH CH2 CH CH2 HC CH CHs HC

A: 1-propyl-3-methylcyclohexane

Q: Question 7 for the compound.

A: Nomenclature of cyclic compounds:  1. Cyclic ring is the parent chain  2. Numbering should be in…

Q: Draw the structures of: a) 3-isobutylcyclohexene b) 4,7-dichloro-1-octyne

A:

Q: 1. Give the structure of the following esters: a. Pentyl acetate b. Ethyl cinnamate c. Amyl…

A: Ester can be represented by the formula RCOOR′ and ester formed by the reaction between acid and an…

Q: A protein molecule composed of a sequence of polar amino acids, shown in blue, and a sequence of…

A: Given that the blue part of the amino acid is polar and the pink part is nonpolar. In a phospholipid…

Q: Calculate the hydroxide ion concentration, [OH−], for a solution with a pH of 10.49. Calculate the…

A: pH is equal to the negative logarithm of hydrogen ions

Q: For the compund + H,O 아 +H,0

A:

Q: H2S + H20 H3O+HS- Which specie is bronsted acid?

A: • The given reaction is,            H2S + H2O → H3O+ + HS-    • We need to determine the bronsted…

Q: What is the pH of a 0.20 M HCI solution? O 12.39 O 0.70 O 13.30 O 1.61

A:

Q: CH3 CH;=CH(CH2)2 , 'N' 35-47% ČO,H

A: In this question, we will write the mechanism so first we need to redraw the starting material in…

Q: Curriculum Expectation - C2. investigate the molecular shapes and physical properties of various…

A:

Q: TLC was used to compare the solubility of two compounds A and B in a solvent system (acetic acid,…

A:

Q: Consider the reaction 2NH3(g) → N2g) + 3H2(g) What is the rate of NH3 ? A[NH3]/At O-% ANH3]/A! O %…

A:

Q: What is the narrow graduated piece of glass equipment called?

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…